Objective/Method/Outcome
Objective: Determines if the cooling valve is open when the unit is not operational
Method: The position of the valve is used to determine if the cooling unit is open. If the status of the unit is off while the position of the valve is open, for longer than the acceptable amount of time, an insight is triggered.
Outcome: Triggers an insight if the cooling valve is open while the unit is inactive.
Description
Monitors cooling valve position and unit status, ensuring that valves remain closed while unit is not running. This is likely a control fault, and not an energy fault if there is no flow to the coil.
This rule is part of the CopperTree Standard ruleset.
Default Priority
Medium
Diagnosis
Review valve programming.
Message
Cooling valve remains open while unit is inactive.
Rule Template
Insight Type: Fault Detection
Trigger Type: Active High
Logic
Inputs
| Input | Unit | Tags | Description |
|---|---|---|---|
| Cooling Valve | Discharge Air Cooling Command | The status of the cooling valve | |
| Threshold – Weekly Hours of Faulty Operation | The minimum hours of fault to trigger insight | ||
| SF Status | Discharge Air Fan Command, Discharge Air Fan Status | The status of the supply fan |
